Evidence map›Paper›PMID 26565909›Full record

ArticleCell reports2015

Exosome Secretion by the Parasitic Protozoan Leishmania within the Sand Fly Midgut.

Vanessa Diniz Atayde, Hamide Aslan, Shannon Townsend, Kasra Hassani, Shaden Kamhawi, Martin Olivier

Open access · goldAbstract read
In one paragraph

Article in Cell reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 132 papers.

0numbers the graph read from it
0cells of the map it votes in
132citing papers in PubMed
22.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

132 citing papers in PubMed, 260 citations in OpenAlex.

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  9. Performance of Extracellular Vesicles FromJournal of parasitology research · 2025
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  12. Review
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  15. Article
  16. UniqueFrontiers in cellular and infection microbiology · 2024
    Article
  17. Article
  18. Review
  19. Identification of potential novel proteomic markers ofFrontiers in cellular and infection microbiology · 2024
    Article
  20. Immunomodulatory properties ofFrontiers in parasitology · 2024
    Article

72 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Vanessa Diniz AtaydeDepartment of Medicine, Microbiology and Immunology, McGill University, 3775 University Street, Montréal, QC H3A 2B4, Canada; Infectious Diseases and Immunity in Global Heath Program, Research Institute of the McGill University Health Centre, 1001 Boulevard Décarie, Montréal, QC H4A 3J1, Canada.
Hamide AslanVector Molecular Biology Section, NIH, 12735 Twinbrook Parkway, Rockville, MD 20878, USA; Faculty of Health Science, Selahaddin Eyyubi University, 215 Ba?c?lar Mah. ?anl?urfa Blv Otogar Kar??s?, Diyarbakir, 21090 Ba?lar, Turkey.
Shannon TownsendVector Molecular Biology Section, NIH, 12735 Twinbrook Parkway, Rockville, MD 20878, USA.
Kasra HassaniDepartment of Medicine, Microbiology and Immunology, McGill University, 3775 University Street, Montréal, QC H3A 2B4, Canada.
Shaden KamhawiVector Molecular Biology Section, NIH, 12735 Twinbrook Parkway, Rockville, MD 20878, USA. Electronic address: skamhawi@niaid.nih.gov.
Martin OlivierDepartment of Medicine, Microbiology and Immunology, McGill University, 3775 University Street, Montréal, QC H3A 2B4, Canada; Infectious Diseases and Immunity in Global Heath Program, Research Institute of the McGill University Health Centre, 1001 Boulevard Décarie, Montréal, QC H4A 3J1, Canada. Electronic address: martin.olivier@mcgill.ca.
Vector (United States) · USMcGill University Health Centre · CAMcGill University · CA

Funding

CIHRIntramural NIH HHS Z99 AI999999
6 · The paper itself

Abstract

Despite several studies describing the secretion of exosomes by Leishmania in vitro, observation of their formation and release in vivo has remained a major challenge. Herein, we show that Leishmania constitutively secretes exosomes within the lumen of the sand fly midgut through a mechanism homologous to the mammalian pathway. Through egestion experiments, we demonstrate that Leishmania exosomes are part of the sand fly inoculum and are co-egested with the parasite during the insect's bite, possibly influencing the host infectious process. Indeed, co-inoculation of mice footpads with L. major plus midgut-isolated or in-vitro-isolated L. major exosomes resulted in a significant increase in footpad swelling. Notably, co-injections produced exacerbated lesions through overinduction of inflammatory cytokines, in particular IL-17a. Our data indicate that Leishmania exosomes are an integral part of the parasite's infectious life cycle, and we propose to add these vesicles to the repertoire of virulence factors associated with vector-transmitted infections.

Indexed as

AnimalsCytokinesExosomesIntestinesLeishmaniaLeishmaniasis, CutaneousMicePsychodidaeCytokines

Identifiers

PMID26565909
PMCPMC4644496
OpenAlexW2186123618

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.